M-type star · red

HR 2639

HR 2639 is a red in the constellation Monoceros 571 ly from Earth. Its surface is about 3,532 K, about 0.6 times the Sun's surface temperature, and it shines at 218× the Sun's brightness. At magnitude 5.2 it is bright enough to see with the naked eye; the light you see left it 571 years ago.

571 lybrightness mag 5.22M2III

Also catalogued as HD 52666 · HIP 33878

3,532 K
temperature
5.22
apparent magnitude
218× ☉
luminosity vs Sun
M2III
spectral type
Distance & comparison with our Sun
571 years
at light speed from Earth
0.61×
as hot as the Sun
218×
the Sun's light output
-1.00
absolute magnitude
Explore from here · roam the neighborhood
HR 2639M-type
Sky regionMonocerosthis direction
StarHR 257042 ly
StarHR 263644 ly
StarHR 252147 ly
StarBeta Monstar
StarAlpha Monstar
Nearest stars
Bright stars in Monoceros
Can you see it tonight?
VISIBLE TO THE NAKED EYE
Brightness mag 5.2To see it no equipment neededLook toward Monoceros

Star data from the HYG database v4.2 (Astronexus, CC BY-SA 4.0). Temperature and colour computed by gravityfinder from the B-V colour index; the illustration is generated from that temperature, not a photograph.